WO2004025632A1 - Support de stockage d'informations optique - Google Patents

Support de stockage d'informations optique Download PDF

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Publication number
WO2004025632A1
WO2004025632A1 PCT/KR2003/001793 KR0301793W WO2004025632A1 WO 2004025632 A1 WO2004025632 A1 WO 2004025632A1 KR 0301793 W KR0301793 W KR 0301793W WO 2004025632 A1 WO2004025632 A1 WO 2004025632A1
Authority
WO
WIPO (PCT)
Prior art keywords
area
storage medium
information storage
optical information
lead
Prior art date
Application number
PCT/KR2003/001793
Other languages
English (en)
Inventor
Kyung-Geun Lee
In-Sik Park
Chong-Sam Chung
Du-Seop Yoon
Chang-Min Park
Original Assignee
Samsung Electronics Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co., Ltd. filed Critical Samsung Electronics Co., Ltd.
Priority to AU2003258852A priority Critical patent/AU2003258852A1/en
Priority to MXPA05002568A priority patent/MXPA05002568A/es
Priority to BRPI0318809A priority patent/BRPI0318809B1/pt
Priority to BRPI0314170A priority patent/BRPI0314170B1/pt
Priority to EP03795456A priority patent/EP1543511B1/fr
Priority to CA002497659A priority patent/CA2497659C/fr
Priority to AT03795456T priority patent/ATE471560T1/de
Priority to DE60333022T priority patent/DE60333022D1/de
Priority to JP2004535237A priority patent/JP2005538488A/ja
Publication of WO2004025632A1 publication Critical patent/WO2004025632A1/fr
Priority to HK06103967A priority patent/HK1083926A1/xx

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24073—Tracks
    • G11B7/24079—Width or depth
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0901—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following only
    • G11B7/0906—Differential phase difference systems

Definitions

  • the present invention relates to an optical information storage medium, and more particularly, to an optical information storage medium in which a track pitch in all or a portion of a lead-in area is different from a track pitch in remaining areas of the optical information storage medium so that the reliability of reproduction of important optical information storage medium-related information can be improved.
  • Optical discs are generally used as information storage media of optical pickup devices, which record information on and/or reproduce information from the optical discs without contacting the optical discs.
  • Optical discs are classified as either compact discs (CDs) or digital versatile discs (DVDs) according to their information recording capacity.
  • CDs and DVDs further include 650MB CD-Rs, CD-RWs, 4.7GB DVD+RWs, DVD-random access memories (DVD-RAMs), DVD-R, DVD-rewritables (DVD-RWs), and so forth.
  • Read-only discs include 650MB CDs, 4.7GB DVD-ROMs, and the like.
  • HD-DVDs high-density digital versatile discs (HD-DVDs) have been developed which have a recording capacity of 20GB or more.
  • FIG. 1 illustrates the structure of a conventional DVD-ROM 110.
  • the DVD-ROM 110 includes a user data area 105 in which user data is recorded.
  • a lead-in area 100 is formed inside the user data area 105.
  • a lead-out area 110 which is formed outside the user data area 105.
  • Data is recorded as dots in the lead-in area 100, the user data area 105, and the lead-out area 110.
  • the track pitch is 0.74 ⁇ m in the lead-in area 100, the user data area 105, and the lead-out area 110.
  • the track pitch tends to be reduced when increasing the recording capacity.
  • an optical spot focused on a track may reach an adjacent track, the possibility that cross-talk will occur becomes high as the track pitch is reduced. If cross-talk occurs, an abnormal reproduction signal is output. Thus, as the track pitch is reduced, there is an increase in abnormal reproductions of information.
  • the track pitch is required to be adjusted in accordance with an increase in the recording capacity of a storage medium and the importance of data.
  • the present invention provides an optical information storage medium in which a track pitch in an area in which is recorded important optical information storage medium-related information is different from a track pitch in a user data area in which is recorded user data so that the efficiency and reliability of the reproduction of data can be improved.
  • an optical information storage medium includes a lead-in area, a lead-out area that is formed outside the lead-in area, and a user data area disposed between the lead-in and lead-out areas and in which user data is recorded where pits are formed in first tracks of the lead-in area, second tracks of remaining area including the user data area, and the lead-out area, and a track pitch of between adjacent first tracks in all or a portion of the lead-in area is different from a track pitch between adjacent second and/or third tracks in the remaining areas of the optical information storage medium.
  • the first track pitch is greater than the second track pitch in the remaining area of the optical information storage medium.
  • the lead-in area includes an area in which optical information storage medium-related information is recorded and an area in which copy protection information is recorded.
  • the first track pitch in at least one of the areas of the lead-in area is greater than the second track pitch in the remaining area of the optical information storage medium.
  • a ratio of tracking error signals detected in the area having the first track pitch to tracking error signals detected in the area having the second track pitch is 1.5 or more.
  • FIG. 1 illustrates the schematic structure of a conventional DVD-ROM.
  • FIG. 2 illustrates the schematic structure of an optical information storage medium according to an embodiment of the present invention.
  • FIG. 3A illustrates a phase tracking error signal (a differential phase detect (DPD) signal) when a track pitch is 0.32 ⁇ m.
  • DPD differential phase detect
  • FIG. 3B illustrates a phase tracking error signal (a DPD signal) when a track pitch is 0.35 ⁇ m.
  • FIG. 4 is a block diagram of a recording and/or reproducing apparatus according to an embodiment of the present invention. Best mode for carrying out the Invention
  • an optical information storage medium 1000 includes a user data area 15, a lead-in area 10 which is formed inside the user data area 15, and a lead-out area 20 which is formed outside the user data area 15 and the lead-in area 10.
  • a first track pitch in all or a portion of the lead-in area 10 is different from a second track pitch in remaining areas of the optical information storage medium 1000 including the user data and lead-out areas 15, 20.
  • the lead-in area 10 includes areas in which is recorded important data in reproduction from the optical information storage medium.
  • the important data include optical information storage medium-related information, which is recorded in area 10a, and copy protection information, which is recorded in area 10b.
  • the optical information storage medium-related information contains information on the type of storage medium (such as whether the medium 1000 is a recordable disc, write-once disc, or a read-only disc), information on the number of recording layers, information on the recording speed, and information on the size of the optical information storage medium 1000 (disc).
  • a track pitch in at least one of the areas 10a and 10b is the first track pitch which is greater than the second track pitch in the remaining areas except the areas 10a and 10b. It is understood that additional important information in reproduction from the optical information storage medium 1000 may be recorded, and the track pitch in the entire lead-in area 10 may be the first track pitch which is greater than the second track pitch in the remaining areas of the optical information storage medium 1000.
  • the optical information storage medium according to an embodiment of the present invention is read-only optical information storage medium.
  • the pits are formed everywhere in the lead-in area 10, the user data area 15, and the lead-out area 20.
  • the pits are formed in a substrate in advance when manufacturing the read-only embodiment of the optical information storage medium 1000. If data is recorded as the pits, the pits can be formed in the lead-in area 10 and the user data area 15 without stopping a process of forming the pits.
  • a process of manufacturing an optical information storage medium can be simplified and the time required for performing the process can be reduced.
  • One method of performing a tracking operation using the pits is a differential phase detect (DPD) method.
  • the DPD method is used to realize a track servo depending on the phase shift of an optical spot focused on a quarter photodetector.
  • the DPD method is well known, and thus will not be described in detail herein.
  • an output tracking error signals (such as differential phase tracking error signals) are different.
  • FIG. 3A illustrates a DPD signal when the track pitch is 0.32 ⁇ m
  • FIG. 3B illustrates a DPD signal when the track pitch is 0.35 ⁇ m.
  • the amplitude of a phase tracking error signal (a DPD signal) in the track pitch of 0.32 ⁇ m was about 1.46V.
  • the amplitude of the DPD signal in the track pitch of 0.35 ⁇ m was about 2.31V.
  • the amplitude of the DPD signal when the track pitch is larger increased about 1.58 times the amplitude of the DPD signal when the track pitch is smaller.
  • the amplitude of the DPD signal is increased.
  • an error detecting efficiency is improved.
  • the reproduction efficiency and reliability are improved as the track pitch increased.
  • the optical information storage medium according to embodiments of the present invention can be applied to an optical information storage medium having one or more recording surfaces.
  • the track pitch in all or a portion of a lead-in area of each of the plurality of recording surfaces can be greater than the track pitch in the remaining area of each of the plurality of recording surfaces. Accordingly, the track pitch in a portion of the lead-in area in which important information is recorded can be greater than the track pitch in the remaining area of the optical information storage medium so that the reproduction reliability of the important information can be increased.
  • the information storage medium can include the CD-Rs, CD-RWs, DVD-RWs, DVD-RAMs, DVD+RWs, as well as next generation high definition DVDs, such as Blu-ray discs and Advanced Optical Discs (AODs). Further, it is understood the information storage medium need not include lead-in and/or lead-out areas.
  • FIG. 4 is a block diagram of a recording and/or reproducing apparatus according to an embodiment of the present invention.
  • the recording apparatus includes a recording/reading unit 1001 , a controller 1002, and a memory 1003.
  • the recording/reading unit 1001 records data on a disc 1000, which is an embodiment of an information storage medium 1000 of the present invention, and reads the data from the disc 1000.
  • the controller 1002 records and reproduces data from tracks having first and second track pitches according to the present invention as set forth above in relation to FIGs. 2 through 3B.
  • controller 1002 can be computer implementing the method using a computer program encoded on a computer readable medium.
  • the computer can be implemented as a chip having firmware, or can be a general or special purpose computer programmable to perform the method.
  • the recording/reading unit 1001 could include a low wavelength, high numerical aperture type unit usable to record dozens of gigabytes of data on the disc 1000.
  • Examples of such units include, but are not limited to, those units using light wavelengths of 405 nm and having numerical apertures of 0.85, those units compatible with Blu-ray discs, and/or those units compatible with Advanced Optical Discs (AOD).
  • AOD Advanced Optical Discs
  • the track pitch in an area is greater than the track pitch in the remaining areas of the optical information storage medium.

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Holo Graphy (AREA)

Abstract

La présente invention concerne un support de stockage d'informations optique comprenant une zone d'entrée, une zone de sortie et une zone de données utilisateur comprise entre la zone d'entrée et la zone de sortie et dans laquelle les données utilisateur sont enregistrées. Des alvéoles sont formées dans la zone d'entrée, la zone de données utilisateur et la zone de sortie, et un pas transversal situé dans tout ou partie de la zone d'entrée est différent de celui situé dans la zone restante du support de stockage d'informations optique.
PCT/KR2003/001793 2002-09-10 2003-09-02 Support de stockage d'informations optique WO2004025632A1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
AU2003258852A AU2003258852A1 (en) 2002-09-10 2003-09-02 Optical information storage medium
MXPA05002568A MXPA05002568A (es) 2002-09-10 2003-09-02 Medio de almacenamiento de informacion optica.
BRPI0318809A BRPI0318809B1 (pt) 2002-09-10 2003-09-02 aparelho para reproduzir dados com relação a uma mídia de armazenagem de informação ótica
BRPI0314170A BRPI0314170B1 (pt) 2002-09-10 2003-09-02 meio ótico de armazenamento de informação, meio ótico de armazenamento de informação para gravar dados em trilhas, equipamento para oticamente transferir dado com respeito a um meio ótico de armazenamento de informação, e método de reprodução de dado com relação a uma mídia de armazenagem de informação ótica
EP03795456A EP1543511B1 (fr) 2002-09-10 2003-09-02 Support de stockage d'informations optique
CA002497659A CA2497659C (fr) 2002-09-10 2003-09-02 Support de stockage d'informations optique
AT03795456T ATE471560T1 (de) 2002-09-10 2003-09-02 Optisches informationsspeichermedium
DE60333022T DE60333022D1 (de) 2002-09-10 2003-09-02 Optisches informationsspeichermedium
JP2004535237A JP2005538488A (ja) 2002-09-10 2003-09-02 光情報保存媒体
HK06103967A HK1083926A1 (en) 2002-09-10 2006-03-30 Optical information storage medium and method of reproducing data with respect to the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020020054756A KR100739672B1 (ko) 2002-09-10 2002-09-10 광정보 저장매체 및 데이터의 재생 방법
KR10-2002-0054756 2002-09-10

Publications (1)

Publication Number Publication Date
WO2004025632A1 true WO2004025632A1 (fr) 2004-03-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2003/001793 WO2004025632A1 (fr) 2002-09-10 2003-09-02 Support de stockage d'informations optique

Country Status (19)

Country Link
US (17) US7272106B2 (fr)
EP (2) EP1543511B1 (fr)
JP (2) JP2005538488A (fr)
KR (1) KR100739672B1 (fr)
CN (1) CN100342433C (fr)
AT (1) ATE471560T1 (fr)
AU (1) AU2003258852A1 (fr)
BR (2) BRPI0314170B1 (fr)
CA (2) CA2497659C (fr)
DE (1) DE60333022D1 (fr)
ES (1) ES2346523T3 (fr)
HK (1) HK1083926A1 (fr)
MX (1) MXPA05002568A (fr)
MY (1) MY135279A (fr)
PL (1) PL374699A1 (fr)
RU (3) RU2287862C2 (fr)
SG (1) SG153660A1 (fr)
TW (2) TWI316241B (fr)
WO (1) WO2004025632A1 (fr)

Cited By (4)

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JP2010165451A (ja) * 2010-03-08 2010-07-29 Toshiba Corp 情報記憶媒体、再生方法及び記録方法
JP2010267377A (ja) * 2010-07-29 2010-11-25 Toshiba Corp 情報記憶媒体、再生方法、記録方法及び再生装置
JP2010267378A (ja) * 2010-07-29 2010-11-25 Toshiba Corp 情報記憶媒体、再生方法、記録方法及び再生装置
US8142981B2 (en) 2005-04-14 2012-03-27 Kabushiki Kaisha Toshiba Storage medium, reproducing method, and recording method

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DE102008045036B4 (de) * 2008-08-29 2011-06-22 GLOBALFOUNDRIES Dresden Module One Ltd. Liability Company & Co. KG, 01109 Verringern kritischer Abmessungen von Kontaktdurchführungen und Kontakten über der Bauteilebene von Halbleiterbauelementen
WO2014065058A1 (fr) * 2012-10-26 2014-05-01 シャープ株式会社 Dispositif de transport d'élément optique
EP3238667B1 (fr) 2016-04-25 2018-10-10 Össur Iceland EHF Enveloppe destinee a recouvrir un moignon
RU2667879C1 (ru) 2017-05-30 2018-09-24 Общество с ограниченной ответственностью "Аби Продакшн" Обработка и анализ данных на изображениях компьютерной томографии
EP3716919B1 (fr) 2017-11-28 2021-11-03 Ossur Iceland EHF Système d'étanchéité réglable et composant d'étanchéité entre un moignon et une emboîture d'une prothèse

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